<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta http-equiv="X-UA-Compatible" content="ie=edge" />
    <title>JS阻塞测试</title>
    <style>
      #container {
        background-color: yellow;
        width: 100px;
        height: 100px;
      }
    </style>
    <script>
      // 尝试获取container元素
      var container = document.getElementById("container");
      console.log("container", container);
    </script>
  </head>
  <body>
    <div id="container"></div>
    <script src="./index.js" async></script>

    <style>
      #container {
        background-color: blue;
      }
    </style>
  </body>
</html>
